期刊论文

The distribution regulation and sampling technique of Cryptotympana atrata (Fabricius) adult or egg in the pomelo orchard

中文

湖南林业科技

1003-5710

2008

35

2

43-46

10.3969/j.issn.1003-5710.2008.02.015

湖南省科技厅项目“江永香柚品种选育及良种柚生,产基地建设”（编号：05NK3072）.

本校为第一机构

研究表明:黑蚱蝉出土若虫蜕壳多在叶背;卵粒聚集基本在1个产卵段,香柚产卵枝长度变异大而直径变异小;丘岗腰部柚园,产卵枝密度大、变异系数大.黑蚱蝉成虫和产卵枝在柚园的分布型为核心分布,是由于种群聚集性或与环境异质性共同作用引起的;分布基本成分均是个体群,个体群聚集分布随着种群密度提高呈线性增加,并渐趋向于随机分布.大田调查,当平均密度＜5只(枝)/株时,取样10～30株,当平均密度＞5只(枝)/株时,取样5～10株.

The research result were showed: Most Cryptotympana atrata(Fabricius) nympha had out of soil molting at the leaf back.The egg grain was basically to come together in one branch segment of spawning egg,the length variation was greater and the diameter variation was smaller about a branch segment of spawning egg of the fragrant pomelo.The density and the coefficient of variation was big in the pomelo orchard at the mound low hill loins.The distribution type of Cryptotympana atrata(Fabricius) adult and branch of spawning egg belong to the core dis...